William king



W. KING.

PIPE TONGS.

(No Model.)

, Patented Feb. 20.

Suva who's with meow MMM FFICE.

WILLIAM KING, OF LONGMONT, COLORADO, ASSIGNOR or ONE-HALF TO DAVID E.SECOR, OF SAME PLACE.

Pl PE-TONGS;

SPECIFICATION forming part of Letters Patent No. 514,936, dated February20, 1894.

Application filed March 10, 1893. Serial No. 465,443- (No model.)

To all whom it may concern:

Beitknown thatLWILLIAM KING, of Longmont, in the county of Boulder andState of Colorado, have invented a new and useful Improvement inPipe-Tongs or -Wrenches; and I do hereby declare the same to be so fullydescribed and set forth in the following specification and illustratedin the accompanying drawings, forming a part thereof, as to enable thoseskilled in the art to which it appertains to make and use the same.

The object of my invention is to produce a pipe-tongs or wrench'that iseasy to operate and to repair or renew the working parts; it requiresbut one handle to operate the tongs, its operation is automatic, as ittakes hold and lets go automatically on the operation of the handle inone direction or the other,

and, as the biting jaws or surfaces are dovetailed in, they can easilybe removed when desired; furthermore, there being three comparativelyflat bearing-points it is not liable to crush even thin or weak pipe.

In the accompanying drawings, Figure 1. is a perspective view. Fig. 2.is a longitudinal sectional view of one jaw the other jaw and leverbeing in perspective.

- In carrying out my invention I have combined a yoke with the toothedand jawed levers, their fulcrum piece, and the adjusting screw therefor;the purpose of the yoke being to support the piece and adjust the jaws.

O, is the hooked jaw.

B, is the operating lever and jaw, in which is dovetailed the bitingsurface jaw 17, the biting jaw c, is dovetailed in the jaw G. The leverBand the jaw O, are crossed one on the other, and are held together by afulcrum piece D, which goes through them and the yoke O; the'jaw O, isslotted at c and at 0 as clearly seen in the drawings. The jaw O isslipped upon the lever B by means of the slot c that is, the lever Bpasses through the slot 0 in the jaw O. The pivot or fulcrum piece Dplays in the slot 0' in the jaw O, and hence the lever B is made to playor slide within the jaw G, to the full extent of the slot 0'. Theoperating screw E goes through the head of the yoke C and turns freelywithin, being provided outside of said yoke with a wing or thumb nuthaving a shoulder rest to rest against the yoke head. So there is ashoulder onsaid screw within the yoke; these two shoulders serve tomaintain such a connection between the yoke and the screw as will admitof the screws being freely rotated, and thus cause the yoke to eitheradvance or recede on the screw, as the screw, by reason of saidshoulders, canneitheradvance nor recede. As the fulcrum piece is carriedby the yoke and fits closely in the lever B, it will be seen that thesaid yoke, fulcrum piece, and lever B will he moved simultaneously asthe screw E is rotated, and hence theyoke and the lever and jaw B, willhe slid on and within the jaw 0, whenever the screw is operated.

Among the advantages of my new pipe tongs or'wrench are these: By reasonof the three gripping surfaces or bearings (see Fig. 2.) the pipe eventhough thin and weak is not liable to be crushed; it has but oneoperating handle and is operated by one hand, leaving the other hand ofthe workman free to hold the pipe or for other service; and, by

reason of a slight backward motion of the operating lever B, the tongswill let go automatically, and so, by reason of a forward motion of theoperating lever B, the tongs will take hold automatically; furthermore,by reason of the adjusting screw E, the jaws may be set for very smallor very large pipe. The only limit to the size of the pipe is the limitof the slot 0, Furthermore, one of the greatest advantages of my tongsis that when the biting jaws (proper) b and c wear out there is nothingto do but knock them out of the dovetails and drive in new ones, makingthe repair of my tongs both quick and cheap.

Having thus described the nature of my invention and the manner ofconstructing and using the same, what I claim is In combination thehooked jaw having the two slots therein substantially at right angles,one to the other, said jaw being provided with dovetailed ways, the yokecarrying the fulcrumed piece, said piece sliding in one of said slots inthe hooked jaw, and the adj usting screw swiveled therein, and theoperating lever pivoted to the hooked jaw, and in the name to thisspecification, in the presence of other slot, said lever havingdovetailed ways two subscribing witnesses, this 30th day of andremovable bitingjaws fitting and adapted January, A. D. 1893.

to the said dovetailed ways, the said biting W'ILLIAM KING. 5 jaws, andthe face of the hooked jaw forming Witnesses:

three gripping surfaces, all as set forth. GEO. I-I. THORNE, Intestimony whereof I have signed my J. A. BUCKLEY.

